[1] Univ Washington, Sch Med, Dept Rehabil Med, Seattle, WA 98195 USA
[2] Univ Washington, Ctr Med, Ctr Multidisciplinary Pain, Seattle, WA USA
[3] Univ Western Ontario, Div Rheumatol, Dept Med, London, ON N6A 3K7, Canada
[4] Univ Western Ontario, Dept Psychol, London, ON N6A 3K7, Canada
[5] Beryl & Richard Ivey Rheumatol Day Programs, St Josephs Hlth Care, London, ON, Canada
[6] Yale Univ, Dept Psychiat, New Haven, CT 06520 USA
[7] Yale Univ, Dept Neurol, New Haven, CT USA
[8] Yale Univ, Dept Psychol, New Haven, CT 06520 USA
[9] VA Connecticut Healthcare Syst, West Haven, CT USA